CN110423068A - A kind of superelevation is strong, high pervious concrete building block and preparation method thereof - Google Patents
A kind of superelevation is strong, high pervious concrete building block and preparation method thereof Download PDFInfo
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- CN110423068A CN110423068A CN201910772858.2A CN201910772858A CN110423068A CN 110423068 A CN110423068 A CN 110423068A CN 201910772858 A CN201910772858 A CN 201910772858A CN 110423068 A CN110423068 A CN 110423068A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B1/00—Producing shaped prefabricated articles from the material
- B28B1/14—Producing shaped prefabricated articles from the material by simple casting, the material being neither forcibly fed nor positively compacted
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
- B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
- B28B11/245—Curing concrete articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
- B28B13/04—Discharging the shaped articles
- B28B13/06—Removing the shaped articles from moulds
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/224—Surface drainage of streets
- E01C11/225—Paving specially adapted for through-the-surfacing drainage, e.g. perforated, porous; Preformed paving elements comprising, or adapted to form, passageways for carrying off drainage
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00241—Physical properties of the materials not provided for elsewhere in C04B2111/00
- C04B2111/00284—Materials permeable to liquids
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention belongs to the field of building materials, disclose that a kind of superelevation is strong, high pervious concrete building block and preparation method thereof.The concrete segment is by pervious concrete core material and high-strength concrete supporting course is compound forms.Preparation method are as follows: particle size range is used to prepare pervious concrete core material for the simple grain diameter aggregate of 5.0~31.5mm and cementitious material and additive, it is placed in mold, between mold and pervious concrete core material, pour high-strength concrete supporting course, it is firmly bonded high-strength concrete supporting course with pervious concrete core material, demoulding after curing in the mold, obtains that the superelevation is strong, high pervious concrete building block.The present invention can be designed by pervious concrete and the optimization of high-strength concrete self performance, cross section structure, regulate and control the mechanics and water permeability of pervious concrete building block, preparation is provided simultaneously with the concrete segment of superhigh intensity (50~90MPa), high permeable (5.0~15.0mm/s).
Description
Technical field
The invention belongs to the field of building materials, and in particular to a kind of superelevation is strong, high pervious concrete building block and its preparation side
Method.
Background technique
In sponge urban construction, pervious concrete is one of the critical material for constructing artificial sponge's body.Pervious concrete knot
Structure is regarded as aggregate and wraps up and bond the celluar concrete of formation by slurry, and it is permeable system that interconnected pore, which provides water-permeable passage,
Several decisive influence factors.It is only bonded by cement slurry between adjacent aggregate, causes the mechanical property of pervious concrete poor.It is logical
In normal situation, high pervious concrete (>10mm/s) needs higher interconnected pore rate and larger hole, make its intensity it is lower (<
20MPa)；High-intensitive pervious concrete (20~30MPa) requires that interconnected pore rate is lower and aperture is smaller, causes its permeability rate non-
Normal small (< 3mm/s).In short, the intensity of pervious concrete is lower (especially water permeability is more demanding), and then cause it anti-
The durabilities such as folding, freeze thawing resistance circulation, anti-drying and watering cycle are poor.The load such as the friction such as people's row or wheel act on lower pervious concrete face
Layer aggregate is easy to peel off, and the field of middle high traffic load is chiefly used in the low traffic such as pavement, parking lot, slope protection and carries using less
Lotus field.In addition, generalling use the modes such as high pressure water flushing, negative-pressure ward cleans pervious concrete, it is made to restore water permeability,
Since pervious concrete intensity is lower in cleaning process, surface aggregate is also easily peeled off, and has seriously affected pervious concrete pavement
Service life.Therefore, high-intensitive, high pervious concrete technology of preparing, extension pervious concrete application field must solve
Bottleneck, and improve the critical issue that pervious concrete service life must solve.Currently, mostly by using small particle aggregate,
The measures such as cement slurry intensity and volume content of raising, can improve the intensity of pervious concrete, but also reduce to a certain extent
The permeability rate of pervious concrete, can not get rid of the limitation of existing pervious concrete preparation method, also can not just prepare high-strength
Degree, high pervious concrete.
Summary of the invention
In place of the above shortcoming and defect of the existing technology, the primary purpose of the present invention is that providing a kind of superelevation
By force, high pervious concrete building block.The present invention, as core material, provides water-permeable passage using pervious concrete；Using high-strength concrete
As supporting course, the overall mechanical properties of pervious concrete building block are improved, it is final to prepare that superelevation is strong, high pervious concrete building block,
It solves water permeability and mechanical property is difficult to the contradiction taken into account, expand the use scope of pervious concrete, improve its durability, prolong
Its long service life, the strong construction for pushing " sponge city ".
The preparation method for strong, high pervious concrete building block that another object of the present invention is to provide above-mentioned superelevation.This method
Using pervious concrete core material is first formed, the rear prefabricated pervious concrete building block of mode for forming high-strength concrete supporting course passes through
Pervious concrete and high-strength concrete self performance optimization, cross section structure design, regulate and control pervious concrete building block mechanics and thoroughly
Aqueous energy, preparation are provided simultaneously with superhigh intensity, high permeable concrete segment.
The object of the invention is achieved through the following technical solutions:
A kind of superelevation is strong, high pervious concrete building block, by pervious concrete core material and high-strength concrete supporting course complex group
At.
Further, 28 days compression strength of strong, the high pervious concrete building block of the superelevation are 50~90MPa, permeable system
Number is 5.0~15.0mm/s.
The preparation method of strong, the high pervious concrete building block of above-mentioned superelevation, including following preparation step:
(1) particle size range is used to prepare permeable mix for the simple grain diameter aggregate of 5.0~31.5mm and cementitious material and additive
Solidifying core material；
(2) the pervious concrete core material of step (1) is placed in mold, between mold and pervious concrete core material, is poured
High-strength concrete supporting course is built, is firmly bonded high-strength concrete supporting course with pervious concrete core material；
(3) demoulding after curing in the mold, obtains that the superelevation is strong, high pervious concrete building block.
Further, cementitious material described in step (1) refers to portland cement or portland cement and miberal powder, fine coal
The mixing of at least one of the complementary cementitious material such as ash, silicon ash.
Further, additive described in step (1) refers at least one of water-reducing agent, defoaming agent and reinforcing agent.
Further, in step (1) pervious concrete core material prepare slurry volume and aggregate volume ratio be 0.15~
0.40, slurry water-cement ratio is 0.15~0.30.
Further, in step (1) moulding process of pervious concrete core material be jolt ramming molding, compaction moulding or two kinds at
The combination of type mode.
Further, the aggregate size of the preparation of high-strength concrete supporting course described in step (2) is selected as 0.08~0.9mm
Fine aggregate or 0.08~0.9mm fine aggregate and 5~25mm coarse aggregate mixing；Or add again on the basis of above-mentioned aggregate
Enter 1~12 μm of silica flour as filler；The slurry volume of high-strength concrete supporting course preparation is not less than with aggregate volume ratio
1.25, slurry water-cement ratio is 0.12~0.25.
Further, the cementitious material of the preparation of high-strength concrete supporting course described in step (2) using portland cement or
The mixing of at least one of the complementary cementitious material such as portland cement and miberal powder, flyash, silicon ash.
Further, the moulding process of high-strength concrete supporting course described in step (2) be jolt ramming molding, compaction moulding or
The combination of two kinds of molding modes.
Concrete segment of the invention and preparation method thereof have the following advantages that and the utility model has the advantages that
Method of the invention can optimize permeable core material and supporting course composition, design permeable block structure, improve permeable coagulation
The mechanics and water permeability of earth building blocks, the specific steps are as follows:
The first step optimizes permeable core material performance: by regulation aggregate size, slurry and aggregate volume ratio, the slurry ratio of mud and
Consistency etc. optimizes the permeable and mechanical property of pervious concrete core material itself.
Second step optimize supporting course performance: by regulation aggregate size and gradation, gel material content, the slurry ratio of mud,
Additive usage etc. optimizes the mechanical property of load-bearing layer concrete itself.
Third step optimised coagulation earth building blocks structure: it in the case where guaranteeing the connection of pervious concrete core material, designs high-strength mixed
(see attached drawings 1) such as solidifying soil supporting course cross sectional shape, area ratios, improves the permeable and mechanical property of concrete segment entirety.
Intensity (the F of concrete segmentPB) can be calculate by the following formula:
FPB=a × b × FPC+c×(1-b)×FHC
In formula: a is the intensity correction factor of permeable core material, and b is that permeable core material cross-sectional area accounts for concrete segment sectional area
Ratio, FPCFor the intrinsic strength of permeable core material；C is the intensity correction factor of high-strength concrete supporting course, FHCFor high-strength coagulation
The intrinsic strength of native supporting course.
Coefficient of permeability (the P of concrete segmentPB) can be calculate by the following formula:
PPB=e × f × PPC
In formula: e is the coefficient of permeability correction factor of permeable core material, and f is that permeable core material cross-sectional area accounts for concrete segment section
The ratio of area, PPCFor the intrinsic coefficient of permeability of permeable core material.
Detailed description of the invention
Fig. 1 is the cross-sectional structure schematic diagram of superhigh intensity of the present invention, high pervious concrete building block.
Specific embodiment
Below with reference to embodiment, the present invention is described in further detail, and embodiments of the present invention are not limited thereto.
Comparative example 1
In this comparative example, pervious concrete composition are as follows: aggregate size are as follows: 8.0~9.5mm, slurry volume and aggregate volume
Than are as follows: 33.55%, cementitious material composition: 52.5 label silicic acid hydrochloric acid water mud 90%, miberal powder 10%, cement slurry water-cement ratio are as follows:
0.27, water-reducing agent volume are as follows: 0.6% (relative to cementitious material quality), using 0.5MPa compaction moulding technique.As shown in Table 1
28 days intensity of pervious concrete are 36.8MPa, coefficient of permeability 18.7mm/s.
Comparative example 2
In this comparative example, pervious concrete composition are as follows: aggregate size are as follows: 9.5~11.2mm, slurry volume and aggregate volume
Than are as follows: 20.7%, cementitious material composition: 52.5 label silicic acid hydrochloric acid water mud 90%, miberal powder 10%, cement slurry water-cement ratio are as follows:
0.27, water-reducing agent volume are as follows: 0.6% (opposite and cementitious material), using 0.5MPa compaction moulding technique.Table 1 shows permeable mixed
Coagulate soil 28 days intensity be 27.5MPa, coefficient of permeability 23.4mm/s；
Comparative example 3
In this comparative example, pervious concrete composition are as follows: aggregate size range of choice: 11.2~13.2mm, slurry volume with
Aggregate volume is than range of choice: 17.56%, cement slurry water-cement ratio range of choice: and 0.27, cementitious material composition: 52.5 labels
Silicic acid hydrochloric acid water mud 85%, miberal powder 10%, silicon ash 5%, water-reducing agent volume: 0.7% (opposite and cementitious material), using jolt ramming at
Type technique.Table 1 show 28 days intensity of pervious concrete be 19.2MPa, coefficient of permeability 40.6mm/s.
It can be obtained by the above comparative example 1~3: when the pervious concrete prepared using conventional method, if improving its permeable system
(18.7mm/s is improved to 40.6mm/s) number, and compression strength is caused to be gradually reduced (36.8MPa drops to 19.2MPa).
Embodiment 1
(1) pervious concrete core material match ratio is with comparative example 1: simple grain diameter aggregate (8.0~9.5mm of particle size range):
1789.8kg/m3, cementitious material composition: portland cement (more than 52.5 labels) 323.0kg/m3, miberal powder (S105 grades)
35.9kg/m3, water 96.9kg/m3, water-reducing agent (polycarboxylic acids, solid content > 25%) 2.15kg/m3, using 0.5MPa compaction moulding work
Skill.
(2) load-bearing layer concrete (C120) match ratio are as follows: gradation good stone (basalt, elongated particles < 5%, grain
5.0~10.0mm of diameter range accounts for 23%, and 77%) 10.0~25.0mm of particle size range is accounted for: 1020kg/m3, river sand (sand in the area II,
Clay content < 1.5%): 549kg/m3, cementitious material composition: portland cement (more than 52.5 labels) 610kg/m3, silicon ash 72kg/
m3, flyash (I grades) 50kg/m3, water 113.5kg/m3, water-reducing agent (polycarboxylic acids, solid content > 30%, water-reducing rate > 30%)
15.2kg/m3.Supporting course is rectangular shaped rim, area ratio be 36.0% (rectangular shaped rim thickness 1.5cm, concrete segment having a size of
15cm × 15cm) when, using jolt ramming moulding process.The maintenance of concrete segment room temperature demoulds afterwards for 24 hours, and water Plays conserve 27 days
Afterwards, according to the compression strength and coefficient of permeability of GB50107-2010 test building block.
Table 1 show 28 days intensity of pervious concrete core material be 36.8MPa, coefficient of permeability 18.7mm/s；Supporting course is mixed
28 days intensity for coagulating soil are 144.2MPa.28 days intensity of concrete segment reach 10.8mm/s up to 56.4MPa, coefficient of permeability.
Embodiment 2
(1) pervious concrete core material match ratio is the same as embodiment 1.
(2) load-bearing layer concrete (C150) match ratio are as follows: (80~630 μm of particle size range, contain mud to the good quartz sand of gradation
Amount < 1.5%): 880kg/m3, cementitious material composition: portland cement (more than 52.5 labels) 800kg/m3, silicon ash 200kg/m3,
Water 187kg/m3, water-reducing agent (polycarboxylic acids, solid content > 30%, water-reducing rate > 30%) 18.4kg/m3.Supporting course is rectangular shaped rim, face
When product is than being 36.0% (rectangular shaped rim thickness 1.5cm, concrete segment is having a size of 15cm × 15cm), using jolt ramming moulding process.
The maintenance of pervious concrete building block room temperature demoulds afterwards for 24 hours, after water Plays conserve 27 days, according to GB50107-2010 test building block
Compression strength and coefficient of permeability.
Table 1 show 28 days intensity of pervious concrete core material be 36.8MPa, coefficient of permeability 18.7mm/s；Supporting course is mixed
28 days intensity for coagulating soil are 166.1MPa.28 days intensity of concrete segment are up to 63.9MPa, coefficient of permeability 10.8mm/s.
Embodiment 3
(1) pervious concrete core material match ratio is the same as embodiment 1.
(2) load-bearing layer concrete (C180) match ratio are as follows: the good quartz sand of gradation (0.3~0.9mm of particle size range) contains
Mud amount < 1.5%): 620kg/m3, silica flour (median is 3.75 μm): 110kg/m3, cementitious material composition: portland cement
(more than 52.5 labels): 1000kg/m3, silicon ash (0.39 μm of average grain diameter): 250kg/m3, water: 150kg/m3, water-reducing agent (poly- carboxylic
Acid, solid content > 30%, water-reducing rate > 30%) 50kg/m3, defoaming agent: 5.6kg/m3, steel fibre (length 13mm): 70kg/m3.It holds
When double-layer is rectangular shaped rim, area ratio is 36.0% (rectangular shaped rim thickness 1.5cm, concrete segment is having a size of 15cm × 15cm),
Using jolt ramming moulding process.The maintenance of pervious concrete building block room temperature demoulds afterwards for 24 hours, after water Plays conserve 27 days, according to
The compression strength and coefficient of permeability of GB50107-2010 test building block.
Table 1 show 28 days intensity of pervious concrete core material be 36.8MPa, coefficient of permeability 18.7mm/s；Supporting course is mixed
28 days intensity for coagulating soil are 183.3MPa.It is 69.8MPa that 28 days intensity of concrete segment, which are up to, coefficient of permeability 10.8mm/
s。
Embodiment 4
(1) pervious concrete core material match ratio is the same as embodiment 1.
(2) load-bearing layer concrete (C180) match ratio is the same as embodiment 3.Supporting course is the sub- frame in rectangle field, area ratio is
49.0% (matrix pattern frame thickness 1.5cm, concrete segment is having a size of 15cm × 15cm), using jolt ramming moulding process.It is permeable mixed
Solidifying earth building blocks room temperature maintenance demoulds afterwards for 24 hours, after water Plays conserve 27 days, according to the pressure resistance of GB50107-2010 test building block
Degree and coefficient of permeability.
Table 1 show 28 days intensity of pervious concrete core material be 36.8MPa, coefficient of permeability 18.7mm/s；Supporting course is mixed
28 days intensity for coagulating soil are 183.3MPa.28 days intensity of concrete segment are up to 91.0MPa, coefficient of permeability 8.6mm/s.
Embodiment 5
(1) pervious concrete core material match ratio is the same as comparative example 3.
(2) load-bearing layer concrete (C180) match ratio is the same as embodiment 3.Supporting course is the sub- frame in rectangle field, area ratio is
49.0% (matrix pattern frame thickness 1.5cm, concrete segment is having a size of 15cm × 15cm), using jolt ramming moulding process.It is permeable mixed
Solidifying earth building blocks room temperature maintenance demoulds afterwards for 24 hours, after water Plays conserve 27 days, according to the pressure resistance of GB50107-2010 test building block
Degree and coefficient of permeability.
Table 1 show 28 days intensity of pervious concrete core material be 19.2MPa, coefficient of permeability 40.6mm/s；Supporting course is mixed
28 days intensity for coagulating soil are 183.3MPa.It is 88.3MPa that 28 days intensity of pervious concrete building block, which are up to, coefficient of permeability is
18.3mm/s。
Embodiment 6
(1) pervious concrete core material match ratio is the same as comparative example 3.
(2) load-bearing layer concrete (C180) is the same as embodiment 3.Supporting course is the sub- frame in rectangle field, area ratio is 22.6% (field
Font frame thickness 0.6cm, concrete segment is having a size of 15cm × 15cm) when, using jolt ramming moulding process.Pervious concrete building block
Room temperature maintenance demoulds afterwards for 24 hours, after water Plays conserve 27 days, according to the GB50107-2010 test compression strength of building block and permeable
Coefficient.
Table 1 show 28 days intensity of core material pervious concrete be 19.2MPa, coefficient of permeability 40.6mm/s；Supporting course is mixed
28 days intensity for coagulating soil are 183.3MPa.28 days intensity of pervious concrete building block are 43.7MPa, coefficient of permeability 32.6mm/
s。
The mechanics and water permeability of 1 concrete segment of table
To sum up, compared with the pervious concrete (comparative example) of conventional method preparation, using the coagulation of the method for the present invention preparation
Earth building blocks mechanical property increases substantially.For example, comparative example 1 is permeable in the case where coefficient of permeability identical (18mm/s or so)
28 days intensity of concrete are only 36.8MPa, 28 days intensity height of pervious concrete building block (embodiment 5) of the invention patent preparation
Up to 88.3MPa, 140% is improved.In the case where intensity identical (40MPa or so), the permeable system of 1 pervious concrete of comparative example
Number is only 18.7mm/s, and pervious concrete building block (embodiment 6) coefficient of permeability of the invention patent preparation is mentioned up to 32.6mm/s
It is high by 74%.Currently, conventional method can not prepare intensity > 40MPa pervious concrete, the method for the present invention can prepare intensity 50~
The concrete segment of 90MPa, 5.0~15.0mm/s of coefficient of permeability realize pervious concrete mechanical property and water permeability
It takes into account.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (10)
1. a kind of superelevation is strong, high pervious concrete building block, it is characterised in that: the concrete segment by pervious concrete core material and
The compound composition of high-strength concrete supporting course.
2. a kind of superelevation according to claim 1 is strong, high pervious concrete building block, it is characterised in that: the concrete is built
28 days compression strength of block are 50~90MPa, and coefficient of permeability is 5.0~15.0mm/s.
3. a kind of preparation method of strong, the high pervious concrete building block of superelevation of any of claims 1 or 2, it is characterised in that including
Following preparation step:
(1) particle size range is used to prepare pervious concrete for the simple grain diameter aggregate of 5.0~31.5mm and cementitious material and additive
Core material；
(2) the pervious concrete core material of step (1) is placed in mold, between mold and pervious concrete core material, pours height
Reinforced concrete supporting course is firmly bonded high-strength concrete supporting course with pervious concrete core material；
(3) demoulding after curing in the mold, obtains that the superelevation is strong, high pervious concrete building block.
4. a kind of preparation method of strong, the high pervious concrete building block of superelevation according to claim 3, it is characterised in that: step
Suddenly cementitious material described in (1) refers to the mixed of portland cement or portland cement and at least one of miberal powder, flyash, silicon ash
It closes.
5. a kind of preparation method of strong, the high pervious concrete building block of superelevation according to claim 3, it is characterised in that: step
Suddenly additive described in (1) refers at least one of water-reducing agent, defoaming agent and reinforcing agent.
6. a kind of preparation method of strong, the high pervious concrete building block of superelevation according to claim 3, it is characterised in that: step
Suddenly the slurry volume and aggregate volume ratio that in (1) prepared by pervious concrete core material are 0.15~0.40, and slurry water-cement ratio is 0.15
~0.30.
7. a kind of preparation method of strong, the high pervious concrete building block of superelevation according to claim 3, it is characterised in that: step
Suddenly the moulding process of pervious concrete core material is jolt ramming molding, the combination of compaction moulding or two kinds of molding modes in (1).
8. a kind of preparation method of strong, the high pervious concrete building block of superelevation according to claim 3, it is characterised in that: step
Suddenly high-strength concrete supporting course described in (2) preparation aggregate size be selected as 0.08~0.9mm fine aggregate or 0.08~
The mixing of the coarse aggregate of the fine aggregate and 5~25mm of 0.9mm；Or 1~12 μm of quartz is added on the basis of above-mentioned aggregate
Powder is as filler；The slurry volume and aggregate volume ratio of high-strength concrete supporting course preparation are not less than 1.25, and slurry water-cement ratio is
0.12~0.25.
9. a kind of preparation method of strong, the high pervious concrete building block of superelevation according to claim 3, it is characterised in that: step
Suddenly the cementitious material of the preparation of high-strength concrete supporting course described in (2) is using portland cement or portland cement and miberal powder, powder
The mixing of at least one of coal ash, silicon ash.
10. a kind of preparation method of strong, the high pervious concrete building block of superelevation according to claim 3, it is characterised in that: step
Suddenly the moulding process of high-strength concrete supporting course described in (2) is jolt ramming molding, the combination of compaction moulding or two kinds of molding modes.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112341064A (en) * | 2020-12-01 | 2021-02-09 | 济南黄河路桥建设集团有限公司 | Water-permeable cement concrete block and preparation method thereof |
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| CN112341064B (en) * | 2020-12-01 | 2021-06-29 | 济南黄河路桥建设集团有限公司 | Water-permeable cement concrete block and preparation method thereof |
| CN115215616A (en) * | 2022-08-05 | 2022-10-21 | 常州大学 | Rainstorm waterlogging-resistant regenerated pervious concrete suitable for heavy-load traffic pavement and preparation method thereof |
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